Wireless sensors for agricultural modules

ABSTRACT

One variation of a method for deploying sensors within an agricultural facility includes: accessing scan data of a set of modules deployed within the agricultural facility; extracting characteristics of plants occupying the set of modules from the scan data; selecting a first subset of target modules from the set of modules, each target module in the set of target modules containing a group of plants exhibiting characteristics representative of plants occupying modules neighboring the target module; for each target module, scheduling a robotic manipulator within the agricultural facility to remove a particular plant from a particular plant slot in the target module and load the particular plant slot with a sensor pod from a population of sensor pods deployed in the agricultural facility; and monitoring environmental conditions at target modules in the first subset of target modules based on sensor data recorded by the first population of sensor pods.

CROSS-REFERENCES TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.17/157,867, filed on Jan. 25, 2021; which is a continuation applicationof U.S. patent application Ser. No. 16/504,209, filed on Jul. 5, 2019,now U.S. Pat. No. 10,936,870, issued on Mar. 2, 2021, which claims thebenefit of U.S. Provisional Application No. 62/694,410, filed on Jul. 5,2018, each of which is incorporated in its entirety by this reference.

This application is related to U.S. patent application Ser. No.15/852,749, filed on Dec. 22, 2017, which is incorporated in itsentirety by this reference.

TECHNICAL FIELD

This invention relates generally to the field of agricultural systemsand more specifically to a new and useful method for selectivelydeploying sensors within an agricultural facility in the field ofagricultural systems.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a flowchart representation of a method;

FIG. 2 is a flowchart representation of one variation of the method;

FIG. 3 is a schematic representation of a sensor pod;

FIG. 4 is a graphical representation of one variation of the method;

FIG. 5 is a flowchart representation of one variation of the method; and

FIG. 6 is a flowchart representation of one variation of the method.

DETAILED DESCRIPTION OF THE INVENTION

The following description of embodiments of the invention is notintended to limit the invention to these embodiments but rather toenable a person skilled in the art to make and use this invention.Variations, configurations, implementations, example implementations,and examples described herein are optional and are not exclusive to thevariations, configurations, implementations, example implementations,and examples they describe. The invention described herein can includeany and all permutations of these variations, configurations,implementations, example implementations, and examples.

1. Method

As shown in FIGS. 1 and 4 , a method S100 for selectively deployingsensors within an agricultural facility includes: accessing scan data ofa set of modules deployed within the agricultural facility in BlockS120; extracting characteristics of plants occupying the set of modulesfrom the scan data in Block S122; selecting a first subset of targetmodules from the set of modules in Block S130, each target module in theset of target modules containing plants exhibiting characteristicsrepresentative of groups of plants occupying modules neighboring thetarget module; pseudorandomly selecting a second subset of targetmodules from the set of modules in Block S132; based on characteristicsof plants occupying the set of modules, identifying a set of groups ofplants exhibiting characteristics approximating a predefined triggercondition; selecting a third subset of target modules from the set ofmodules in Block S134, each target module in the third subset of targetmodules occupied by a group of plants in the set of groups of plants;for each target module in the first subset of target modules, the secondsubset of target modules, and the third subset of target modules,scheduling a robotic manipulator within the agricultural facility toremove a particular plant from a particular plant slot in the targetmodule in Block S140 and load the particular plant slot with a sensorpod from a first population of sensor pods deployed in the agriculturalfacility in Block S142; and monitoring environmental conditions attarget modules in the first subset of target modules, the second subsetof target modules, and the third subset of target modules based onsensor data recorded by the first population of sensor pods in BlockS150.

As shown in FIG. 2 , one variation of the method S100 includes:accessing scan data of a set of modules deployed within the agriculturalfacility in Block S120; extracting characteristics of plants occupyingthe set of modules from the scan data in Block S122; selecting a firstsubset of target modules from the set of modules in Block S130, eachtarget module in the set of target modules containing a group of plantsexhibiting characteristics representative of plants occupying modulesneighboring the target module; for each target module in the firstsubset of target modules, scheduling a robotic manipulator within theagricultural facility to remove a particular plant from a particularplant slot in the target module in Block S140 and load the particularplant slot with a sensor pod from a first population of sensor podsdeployed in the agricultural facility in Block S142; and monitoringenvironmental conditions at target modules in the first subset of targetmodules based on sensor data recorded by the first population of sensorpods in Block S150.

As shown in FIGS. 1 and 5 , another variation of the method S100includes: dispatching a loader to autonomously deliver a first module toa transfer station within the agricultural facility in Block S110, thefirst module defining a first array of plant slots at a first densityand loaded with a first set of plants at a first plant growth stage;dispatching the loader to autonomously deliver a second module to thetransfer station in Block S112, the second module defining a secondarray of plant slots at a second density less than the first density andempty of plants; recording a module-level optical scan of the firstmodule at the transfer station in Block S120; extracting characteristicsof the first set of plants from the module-level optical scan in BlockS122; in response to characteristics of the first set of plantsapproximating a predefined trigger condition, triggering the roboticmanipulator to load a sensor pod into a plant slot in the second modulein Block S142; triggering the robotic manipulator at the transferstation to transfer a first subset of the first set of plants from thefirst module into open plant slots in the second module in Block S144;dispatching the loader to autonomously deliver the second module to agrow area within the alignment feature facility in Block S114; anddetecting environmental conditions at the second module based on sensordata collected by the sensor pod in Block S150.

2. Applications

Generally, the method S100 can be executed by a system in conjunctionwith an agricultural facility (hereinafter the “facility”) toselectively distribute a small number of sensor pods—such as containingenvironmental and water-quality sensors—to a small number of moduleswithin a (much) larger corpus of modules populated with plants invarious stages of development within the facility. The system can thuscollect high-resolution, high-frequency environmental and/orwater-quality data from this small number of sensor pods deployed acrossthis small number of target modules in the facility and can leveragethese sensor data: to inform adjustment of environmental and waterconditions in and around these target modules in order to improveoutcomes of plants occupying these target modules; to interpolate orextrapolate environmental and water conditions in and around othermodules neighboring these target modules; and to inform adjustment ofenvironmental and water conditions in and around these other modules inorder to improve outcomes of plants in these modules not directlymonitored with such sensor pods.

For example, the system can: detect ambient air temperature, ambienthumidity, ambient light level, and ambient air flow rate at a firsttarget module occupying a first location in the facility based on sensordata collected by a first sensor pod deployed in this first targetmodule; similarly detect ambient air temperature, ambient humidity,ambient light level, and ambient air flow rate at a second targetmodule—occupying a first location in the facility and offset from thefirst target module—based on sensor data collected by a second sensorpod deployed in this second target module; repeat this process for othertarget modules in other known locations throughout the facility;interpolate current ambient air temperature, humidity, light level, andair flow gradients throughout the facility based on discrete ambientdata collected by these deployed sensor pods over time; isolate regionswithin the facility exhibiting air temperature, humidity, light level,and/or air flow deviations from target or average conditions at similarmodules containing plants at similar growth stages according to thesegradients; and selectively adjust cooling, (de)humidifier, artificiallighting, and fan settings throughout the facility in order to reducesuch deviations in these regions in the facility and thus achievegreater consistency across plants growing within the facility.

Additionally or alternatively, the system can: access water qualitydata—such as water temperature, water level, dissolved oxygen, pH,and/or nutrient level—from sensor pods deployed to target modulesthroughout the facility; interpolate current water quality gradientsthroughout the facility based on discrete water quality data detected bythese deployed sensor pods over time (e.g., based on a prediction orassumption that neighboring modules exhibit similar nutrient uptake andwater evaporation and are maintained or refreshed according to similarschedules); isolate a cluster of modules within the facility exhibitingwater-related characteristics that deviate from target or averageconditions at similar modules containing plants at similar growth stagesaccording to these gradients; and selectively prompt investigation orrestoration of water conditions in this cluster of modules in order toreduce such deviations and thus achieve greater consistency ofwater-related characteristics across plants growing within the facility.

In addition to environment and water-quality sensors, a sensor pod caninclude a sensor configured to capture data representative of pestpressures (e.g., insects, mold, mildew) presenting on plants occupyingadjacent slots in the same module, representative of pest pressurespresenting on a trap plant occupying the sensor pod, or representativeof pest presence on a surface (e.g., an insect trap card) mounted to thesensor pod. When the sensor pod is deployed to a module, the sensor pod(or the system) can derive presence and/or magnitude of pest pressurespresenting at this module based on data captured by this “pest sensor.”The system can then: aggregate such pest presence and/or magnitude dataderived from data captured by pest sensors in sensor pods deployed totarget modules at known locations within the facility into gradients ofsuch pest pressures throughout the facility; isolate locations andintensities of such pressure presenting in the facility based oncorresponding gradients; and selectively prompt actions to reduce thesepressures or quarantine modules occupying locations exhibiting pressuresby certain pests and/or above threshold pressure intensities. Forexample, the system can prompt systematic deployment of pest responsepods containing beneficial insects to suppress pest insects, scheduleapplication of mildew suppressants, schedule application of pesticides,or queue delivery to a quarantine arena for select clusters of modulesin the facility based on these pest pressure gradients.

Furthermore, the system can: assemble these environmental,water-quality, and/or pest pressure gradients generated over time intotimeseries exposure gradients for individual plants occupying knownplant slots in modules at known locations in the facility over time;access in-process and outcome data for these plants, such asintermediate outcomes derived from scan data recorded at a transferstation when plants are moved between modules and final outcomes derivedfrom scan data recorded at the transfer station when plants areharvested from these modules; and then implement artificialintelligence, deep learning, and/or machine learning techniques togenerate and refine a model that links environmental, water quality, andpest pressure conditions at individual plants grown in the facility overtime to their intermediate and final outcomes. The system can thenimplement this model to inform changes to environmental and waterquality conditions, to inform tolerance or target ranges for theseenvironmental and water quality conditions, and to inform responses topest pressures for future plants grown in the facility.

Therefore, the system can selectively deploy sensor pods to targetmodules in the facility to support collection of high-resolution,high-frequency environmental, water quality, and/or pest pressure dataat discrete locations in the facility and then extrapolate these data toother modules—not occupied by such sensor pods—in the facility to informtargeted adjustment of environment and water conditions and to informtargeted response to pest pressures that maintain or increase yield,plant quality, and consistency of plant crops produced at the facilityover time.

2.1 Sensor Pod Allocation Schema

Generally, costs for acquiring, maintaining, calibrating, distributing,and recalling sensor pods within the facility may be non-negligible andvariable over time/Furthermore, because a sensor pod occupies a plantslot that may otherwise be allocated to a plant, deployment of sensorpods into modules throughout the facility may decrease plant density permodule in the facility and thus decrease throughput of the facility.Therefore, the system can implement Blocks of the method S100 to deploymany fewer sensor pods than modules within the facility and tointelligently deploy small numbers of sensor pods across a largepopulation of modules within a facility according to trigger-based,adaptive, and random sensor pod allocation schema.

For example, the system can deploy a small number of sensor pods across:modules containing plants exhibiting positive, negative, or uncommoncharacteristics that compel collection of high-resolution data andfurther investigation (hereinafter “trigger-based” deployment); targetmodules in clusters of modules containing plants exhibiting positive,negative, or uncommon characteristics that compel collection ofhigh-resolution data (hereinafter “adaptive” deployment); andrandomly-selected modules not necessarily containing plants exhibitingpositive, negative, or uncommon characteristics (hereinafter “random”deployment). The system can also regularly implement trigger-based,adaptive, and random deployment schema to redistribute sensor pods tothe modules throughout the facility over time.

The system can therefore schedule selective deployment of sensor pods totarget modules in the facility and then leverage data collected by thesesensor pods to prompt actions that: protect against failures that mayotherwise lead to poor outcomes for plants occupying an individualtarget module (i.e., according to trigger-based sensor pod deploymentschema); protect against environmental failures in areas of the facilitythat may lead to poor outcomes in plants spread across a cluster ofmodules (i.e., according to adaptive sensor pod deployment schema); andincrease likelihood of collection of data representative of a pressurein plants occupying a target module before these plants express thispressure in the form of a visible, physical change (i.e., according torandom sensor pod deployment schema). The system can also scheduleselective deployment of sensor pods to target modules in the facility toenable collection of data—according to trigger-based, adaptive, andrandom sensor pod deployment schema—that enable refinement of a plantmodel linking environment, water-quality, and pressure inputs tooutcomes for plants grown in the facility.

2.2 Sensor Pod Interfacing

As described below, the system can include: a facility; modulesconfigured to support plants during their growth and deployed throughoutthe facility; a transfer station including a robotic manipulatorconfigured to autonomously move plants between modules of differenttypes and to harvest fully-grown plants from modules; a mover configuredto autonomously move modules between grow areas within the facility andthe transfer station; plant pods configured to transiently supportplants in plant slots within modules; sensor pods configured fortransient (i.e.; temporary) installation into a plant slot in a moduleto collect relatively high-resolution ambient and/or water quality datain and around the module at relatively high frequency; and a local orremote computer system configured to control various actuators withinthe facility to assist growth of plants based on data collected fromsensor pods and other sensors throughout the facility, to dispatch themover to transfer modules to and from the transfer station, and totrigger the robotic manipulator to move plants between modules at thetransfer station.

Generally, a sensor pod can define a form that enables the roboticmanipulator to interface with both plant pods—each supporting anindividual plant—and sensor pods via the same end effector and accordingto similar detection and navigation pathways, thereby enabling simpleand robust interactions between the robotic manipulator and both plantpods and sensor pods. In particular, a sensor pod can include: a basedefining a form factor similar to plant pods configured to support andlocate plants within plant slots in modules deployed within thefacility; water quality sensors extending below the sensor pod base andconfigured to detect qualities of water in a water tank below a plantslot; and ambient sensors extending above the sensor pod base andconfigured to detect ambient conditions above a plant slot. Because thesensor pod defines a form similar to that of a plant pod, a roboticmanipulator may accurately, repeatably, and autonomously transfer bothplant pods that contain individual plants and sensor pods that containsuites of sensors between standardized plant slots in modules deployedthroughout an agricultural facility, thereby enabling operation withinthe facility, selective capture of high-resolution ambient andwater-quality data, and reducing or eliminating reliance on human labornecessary to manage and maintain plants growing within the facility overtime.

For example, the robotic manipulator can execute Blocks of the methodS100 to: engage a target plant pod supporting a plant within a targetplant slot within a first module; withdraw the target plant pod from thetarget plant slot; discard the plant; and then insert a sensorpod—exhibiting a form similar to that of the plant pod—into the targetplant slot in the first module. A mover can then return the first moduleto its assigned location within a grow area of the facility. With thesensor pod now active and located in the first module, the sensor podcan regularly record local ambient and water quality conditions—such asair temperature, air speed, light level, relative humidity, watertemperature, water level, dissolved oxygen, pH, and nutrient level—andwirelessly broadcast these data to a local or remote computer system.The computer system can then: inject these data into plant filesassociated with plants occupying the first module; trigger changes togrowth inputs for this module (e.g., location in the facility, anutrient schedule, a harvest schedule) based on these data; and/orrefine a plant model that represents correlations between such ambientand water quality conditions around plants grown in the facility and theinterim and final outcomes of these plants.

Furthermore, because a sensor pod is mobile and not integrated into orotherwise tied to one module and because the sensor pod defines a“standardized” physical interface for the robotic manipulator, therobotic manipulator can regularly remove the sensor pod from a module,autonomously recalibrate sensors in the sensor pod, clean or sanitizethe sensor pod, and later install the sensor pod in a plant slot inanother module.

(The method S100 is described herein as executed by a system within anagricultural facility to selectively replace a plant housed in a plantslot in a module with a sensor pod in order to collect water and ambientair data from in and near this module. However, modules within theagricultural facility can additionally or alternatively includededicated sensor pod slots; and the system can execute Blocks of themethod S100 to insert sensor pods into dedicated sensor pod slots inselect modules over time in order to collect water and ambient air datafrom in and near these modules.)

3. System

As shown in FIG. 1 , the method S100 can be executed by a systemincluding: a computer system; a fixed sensor suite; an automated (or“autonomous”) mover; and a robotic manipulator. The fixed sensor suiteis connected to the computer system and is configured to regularlycollect optical data (e.g., overhead digital photographic images) ofmultiple modules—each containing multiple plants—staged within a growarea of the facility and to collect ambient sensor data from over thesemodules, such as once per hour or once per second. The mover isconnected to the computer system and configured: to navigate to singlemodules throughout the facility; to collect optical data from groups ofplants in a single module and to collect water quality data from thesemodules, such as once per day or every other day; and to deliver singlemodules to the transfer station and to return modules to their assignedlocations throughout the facility, such as once per two-week intervalper module. The robotic manipulator is connected to the computer system,is located at a transfer station within the facility, and is configuredto collect optical, weight, and/or other data from individual plantswhile moving plants between modules, such as from a nursery module to afinishing module.

In particular, the mover can be configured to automatically navigatethroughout the facility to a particular location under or near a module,to couple to or lift the module, to navigate—with the module—to atransfer station within the facility, and to release (or “deposit”) themodule at the transfer station. While moving past other modules on itsway to collecting a particular module for delivery to the transferstation, the mover can also collect optical and water quality data fromthese other modules. The robotic manipulator can be arranged near thecenter of the transfer station, and the mover can arrange a first moduleof a nursery type (e.g., containing a high density of plant slots) and asecond module of a finishing type (e.g., containing a lower density ofplant slots) adjacent the robotic manipulator at the transfer station inorder to enable the robotic manipulator to navigate its end effectoracross both the full extent of plant slots in the first module and thefull extent of plant slots in the second module. The mover can alsodeposit a third module of the finishing type to the transfer station,such as adjacent the second module, and the robotic manipulator cantransition to transferring cleared plants from the first module to thethird module once all plant slots in the second module are filled. Themover can then return the second and third modules to assigned growareas within the facility, such as under a translucent roof and/or underartificial lighting.

The mover can also deliver a seeding tray to the transfer module, andthe robotic manipulator can implement similar methods and techniques tocheck sizes and weights of plants in the seeding tray and tosequentially transfer plants from the seeding tray into the first modulebefore the mover returns the first module to an assigned grow areawithin the facility. Alternatively, the system can include a secondrobotic manipulator arranged at a second transfer station within thefacility, and the mover can deliver the first module and the seedingtray to the second transfer station, and the second robotic manipulatorcan transfer seedlings from the seeding tray into the first module.

Similarly, the (first) robotic manipulator at the (first) transferstation, the second robotic manipulator at the second transfer station,or a third robotic manipulator at a third transfer station within thefacility can remove plants from the second and third modules of thefinishing type (e.g., for manual or automated processing, such asremoval of roots) and/or place plants from the second and third modulesinto packages (e.g., boxes, pallets) for distribution from the facility.

The method S100 is described below as executed by the system toautomatically transfer lettuce through a sequence of seeding trays,nursery-type module, and finishing-type modules. However, the methodS100 can be implemented in a greenhouse or other facility in conjunctionwith growing any other type of plant, such as fruit, vegetables,legumes, flowers, shrubs, or trees, etc.

3.1 Module

The system includes a set of modules configured to house a group ofplants throughout a segment of the growth cycle of these plants (e.g.,four weeks of a twelve-week grow-period). Each module can define astandard size (e.g., four feet in width by eight feet in length by fourfeet in height; two meters in width by five meters in length by onemeter in height) and can include a number of plant slots matched to thesegment of plant growth cycle associated with the module. For example: aseeding-type module can include 192 plant slots; a nursing-type modulecan include 48 plant slots (i.e., one-quarter as many as seeding-typemodules); and a finishing-type module can include twelve plant slots(i.e., one-quarter as many as nursing-type modules); despite thesemodules defining the same overall size and geometry.

In particular, plants may be grown in modules arranged throughout thefacility, wherein each module defines an array of plant slots configuredto hold one plant (or a “bunch” of like plants, such as multiple basilplants) at a density suited to a stage of plant grown in the module.Young plants may have relatively small leaves covering a relativelysmall area such that these young plants require only a small growvolume; as these plants mature (e.g., to a “sprout” stage or through“thinning” and “rosette” stages), their leaves may grow to cover agreater area, thereby requiring a larger grow volume; as these plantsmature further (e.g., through “early-heading,” “mid-heading” and“mature-heading” stages), their leaves may develop more fully and thuscover a greater area up until a time that these plants are harvested,thereby necessitating an even larger grow volume. In order to maintain arelatively high throughput per floor area within the facility, thefacility can be outfitted with modules of different types—that is,modules with different plant slot densities suited to various stages ofplant growth and therefore to various size ranges of plants from seedingto harvest. For example, the facility can be outfitted with: seedingtrays (or “seeding modules”) defining a highest density of plant slots(e.g., 640 plant slots per 4-foot by 12-foot module) and configured tohold plants during a seeding stage; modules of a first type (e.g., a“nursery-type”) defining a moderate density of plant slots (e.g., 170plant slots per 4-foot by 12-foot module) and configured to hold plantsduring a sprout stage; and modules of a second type (e.g., a“finishing-type”) defining a lowest density of plant slots (e.g., 40plant slots per 4-foot by 12-foot module) and configured to hold plantsduring a finishing stage and up to harvest. By placing young plantsfirst in modules with greatest plant slot densities and then transitingthese plants to modules characterized by lower and lower plant slotdensities as the plants increase in size and maturity, the facility canhouse and grow more plants per module on average and therefore achievegreater space efficiency (i.e., a number of plants per floor area withinthe facility).

In one implementation, a module includes: an open tray configured tocontain a standing volume of water and nutrients; a cover arranged overthe open tray and including a set of perforations, wherein eachperforation defines a plant slot configured to receive and retain oneplant (or one cluster of plants); and a stand configured to support thetray off of the ground. In the implementation: the open tray can definea standard rectangular geometry, as described above; and the lid caninclude a rectangular cover configured to float in water in the tray.For example, the lid can include: a rigid panel (e.g., nylon or aluminumsheet) defining an array (e.g., a linear grid array, a close-pack array)of plant slots; and floats extending across the underside of the rigidpanel and exhibiting sufficient buoyancy and/or height to maintain anair gap between the top surface of water in the tray and the bottomsurface of the lid when the array of plant slots in the lid are filledwith plants, thereby maintaining exposure to air—and thereforeoxygen—for upper root systems of these plants. Furthermore, in thisexample, because the lid floats on the water in the tray, the lid canensure that roots of these plants remain in contact with water in thetray despite changes to the water level in the tray.

Furthermore, in this implementation, the module can include a set ofoptical fiducials arranged on the top surface of the lid and/or the trayand configured to indicate position, orientation, distance, type, and/orunique identity of the module. For example, the module can include: oneoptical fiducial (e.g., a unique barcode or quick-response code)arranged at each of three or four corners on the lid; three (identical)colored dots (e.g., yellow for nursery stage, red for finishing stage)arranged at corners of the lid or tray; or one optical fiducial adjacenteach plant slot on the lid (e.g., a colored circle, square, or polygonof known geometry and dimension encircling each plant slot); etc.

However, a module can define any other structure or geometry and candefine any other number or arrangement of plant slots.

3.2 Sensor Pod

As shown in FIG. 3 , the sensor pod can include: a base defining a formfactor similar to plant pods—that locate plants in plant slots inmodules—and configured to insert into plant slots in modules deployedwithin the facility; water quality sensors extending below the sensorpod base and configured to detect qualities of water in a water tankbelow a plant slot; and ambient sensors extending above the sensor podbase and configured to detect ambient conditions above a plant slot. Forexample: the base can define a conical section including a small end ofdiameter less than the width of plant slots in these modules andincluding a large end of diameter greater than the width of plant slotsin these modules; an end effector on the robotic manipulator can thusengage this conical section on the base to move the sensor pod into andout of a plant slot in a module. In this example, the water qualitysensors (e.g., water temperature, water level, dissolved oxygen, pH,and/or nutrient level sensors) can be mounted on a lower mast extendingfrom the small end of the base; and the ambient sensors (e.g., airtemperature, air speed, light level, and relative humidity sensors) canbe mounted on an upper mast extending from the large end of the base.The sensor pod can thus be loaded into a plant slot such that thesewater quality sensors are submerged into water within the module andsuch that the ambient sensors are located at approximately the samelevel as foliage of plants occupying this module, as shown in FIG. 1 .

In one implementation, the upper mast is extensible (i.e., adjustable)and can be manually or automatically extended and retracted in order tovertically align sensors on the upper mast to the peak height orvertical center of leafy sections of plants in this module such thatambient data collected by these ambient sensors represent conditionsaround the leafy sections of these plants. Similarly, the lower mast canbe extensible and can be manually or automatically extended andretracted in order to vertically align water quality sensors on thelower mast to the peak depth or vertical center of the root sections ofplants in this module such that water quality data collected by theseambient sensors represent water conditions around the root sections ofthese plants.

For example, upon receipt of a module at the transfer station, therobotic manipulator can capture an optical scan of the module, and thesystem can estimate an average, maximum, or other representative heightof plants occupying plant slots in the target module based on theoptical scan. The robotic manipulator can then: retrieve a sensor podfrom a magazine of sensor pods stored at the transfer station; adjust aheight of a mast of the first sensor pod to approximately therepresentative height of the set of plants in the module; and then loadthe sensor pod into a particular plant slot in the module. By thusadjusting the height of the mast of the sensor pod according to heightof other plants in the module, the robotic manipulator can locate alight level sensor in the sensor pod near tops of plants in this modulesuch that the light level sensor is not obscured by these plants andsuch that a signal output by the light level sensor is representative ofa true ambient light level proximal the module.

The sensor pod can also include a wireless communication moduleconfigured to broadcast ambient condition and water quality data back toa wireless hub, wireless gateway, or other computer system within thefacility, such as once per ten-second interval over hours, days, orweeks in which the sensor pod is loaded into a module.

The sensor pod can further include a battery and/or a solar panelconfigured to power sensors and the wireless communication module in thesensor pod. For example: the solar panel can be arranged at the end ofthe upper mast opposite the base; the ambient sensors can be arrangedaround the solar panel; an antenna of the wireless communication modulecan be arranged along a length of the upper mast; and the wirelesscommunication module and the battery can be arranged in the base of thesensor pod.

However, the sensor pod can define any other form and can include anyother ambient and/or water quality sensors in any other arrangement.

3.2.1 Pest Detection Pod

In one variation, a sensor pod further includes: a trap receiverconfigured to retain an insect trap (e.g., a tacky yellow card); and acamera or other optical sensor facing the trap receiver and configuredto capture a photographic image (or other optical scan data) of theinsect trap while the sensor pod is deployed in a module. For example,when the sensor pod is retrieved from a module following a period ofdeployment, a used insect trap can be removed from the sensor pod, thesensor pod can be cleaned or sanitized, water-born and/or environmentalsensors in the sensor pod can be calibrated, and a new insect trap canbe loaded into the trap receiver. (The used insect trap can also besealed, stored, and/or inspected further, such as to verify types ofinsects present on the insect trap in order to inform future deploymentof pesticides or beneficial insects within the facility.) Thisrefurbished sensor pod can later be loaded into another module, such as:responsive to detecting early signs of an insect pest in plantsoccupying the module or transferred into the module from anearlier-stage module (i.e., a trigger-based allocation of the sensorpod); responsive to pseudorandom selection of the module for insectdetection (i.e., random allocation of the sensor pod); or responsive todetecting features of plants—in a cluster of neighboring modulescontaining the module—deviating from features of other plants at similargrowth stages in other modules in the facility (i.e., adaptiveallocation of the sensor pod).

Once deployed to the module, the sensor pod can trigger the camera tocapture images of the insect trap, such as on a fixed interval (e.g.,once per hour) or dynamically (e.g., at a rate proportional to ambientlight level detected by a light level sensor in the sensor pod). Anonboard processor integrated into the sensor pod can then: access aphotographic image captured by the camera; implement computer visiontechniques to detect the insect trap and to detect discrete blobs overthe insect trap (e.g., black or brown blobs over a yellow background) inthe photographic image; count a quantity of discrete blobs—likely torepresent discrete insects—in the photographic image; and then transmitthis insect count to the computer system via its integrated wirelesscommunication module. In this example, the onboard processor can alsoextract sizes of these discrete blobs from the photographic image,generate a histogram of blob sizes and quantities, and return thishistogram (or representative data) to the computer system. Additionallyor alternatively, the onboard processor can implement computer visionand/or deep learning techniques (e.g., a convolutional neural network)to identify and distinguish particular types or classes of insectspresent on the insect trap based on features extracted from thephotographic image (e.g., wasps, aphids, mites, moths, flies, beetles).Alternatively, the sensor pod can transmit each raw photographic imagecaptured by its camera to the computer system, and the computer systemcan implement similar methods and techniques to extract a count, size,and/or type of insect present on the insect trap from these photographicimages.

The computer system can then aggregate timestamped insect counts, sizes,and/or types extracted from photographic images recorded by the camerain the sensor pod, calculate a rate of change (e.g., rate of increase)of particular types or sizes of insects captured on the insect trap, andthen estimate an insect pressure at the module based on the rate ofchange of captured insects and based on types, classes, or sizes ofthese insects (e.g., high insect pressure if the rate of change ofcaptured harmful insects is high; low insect pressure if the rate ofchange of captured harmful insects is low). The computer system can:repeat this process to estimate insect pressure at other modulesthroughout the facility based on insect count, size, and/or type of dataextracted from photographic images captured by cameras in otherinstances of the sensor pod deployed to these modules; and generate aninsect pressure gradient throughout the facility based on theseestimated insect pressures and locations of modules containing thesesensor pods, such as by interpolating or extrapolating between currentestimated insect pressures at known sensor pod locations throughout thefacility. The computer system can then schedule selective deployment ofpesticides or beneficial insects to target areas that correspond tohighest pest pressures (or exhibit estimated insect pressures exceedinga threshold insect pressure) according to this insect pressure gradient.Furthermore, the computer system can specify a magnitude of this insectresponse—such as an amount of pesticide or a quantity of beneficialinsects—deployed to these areas based on insect pressure magnitudeindicated by this gradient.

For example, in this variation, the system can execute Blocks of themethod S100 to: dispatch the mover to deliver a first module—occupied bya first set of plants—to the transfer station; trigger the roboticmanipulator to record an optical scan of the first set of plants in thefirst module; detect a feature, in the optical scan, associated with aninsect pressure; trigger the robotic manipulator to remove a first plantfrom a first plant slot in the first module and load the first plantslot with a first sensor pod—including an insect trap and an opticalsensor facing the insect trap; dispatch the mover to deliver the firstmodule to its assigned grow area in the agricultural facility; access anoptical image recorded by the optical sensor in the first sensor pod;detect a quantity of insects depicted on the insect trap in the opticalimage; interpret a magnitude of insect pressure at the first modulebased on the quantity of insects; predict magnitudes of insect pressuresat a first cluster of modules located proximal the first module; andselectively deploy pesticides or beneficial insects to these modules iftheir magnitudes of insect pressures exceed a threshold pressure.

Therefore, this sensor pod can collect environmental data, water qualitydata, and data representative of insects present on or near a module.Alternately, the system can include and selectively deploy: sensor podscontaining environmental and water-quality sensors; and separate insectdetection pods containing insect traps and cameras configured to captureimages of these insect traps.

3.2.2 Insect Pod

In a similar variation, the system includes an insect pod: configured totransiently install in a plant slot in a module; and containing a cage,receptacle, or habitat configured to house beneficial insects thatparasitize a harmful insect.

For example, a wheat grass can be inoculated with aphids. Wasps can thenbe introduced to the wheat grass and then parasitize these aphids toyield wasp mummies on the wheat grass. This wheat grass can then beloaded into the cage in the insect pod, and this “active” insect pod canthen be loaded into a plant slot in a module—by the roboticmanipulator—such as: if the system detects aphids on an insect trap in asensor pod previously deployed to the module or to a neighboring module;or if features extracted from scan data of this module and/orneighboring modules indicate presence of aphids. Therefore, in thisexample, the system can execute Blocks of the method S100 to: dispatch amover to deliver a first module—occupied by a first set of plants—fromits assigned grow area in the agricultural facility to the transferstation; queue the robotic manipulator to record an optical scan of thefirst set of plants in the first module; detect a feature, in theoptical scan, associated with presence of a particular insect in thefirst module; trigger the robotic manipulator to remove a first plantfrom a first plant slot in the first module and to load the first plantslot with an insect pod containing beneficial insects that parasitizethe particular insect; and then dispatch the mover to deliver the firstmodule to the assigned grow area in the agricultural facility.

Additionally or alternatively, the system can include a trap podincluding a plant cup loaded with a “canary” or “sacrificial” plant thatexhibits greater susceptibility to an insect or otherwise attracts aninsect more than a primary crop grown in the facility. The system canthen implement methods and techniques similar to those described aboveto selectively replace a plant—of the primary crop—in a module with atrap pod, such as: if the system detects an insect on an insect trap ina sensor pod previously deployed to the module or neighboring module; orif features extracted from scan data of this module and/or neighboringmodules in the facility indicate presence of the insect.

3.3 Fixed Infrastructure

The system can include a fixed optical sensor (e.g., a color camera)arranged in a fixed location over modules in the facility and configuredto regularly record images of multiple plants across multiple modulesbelow. For example, the fixed optical sensor can be mounted to theceiling of the facility or coupled to artificial (e.g., backup) lightingarranged over a grow area within the facility.

The system can also include a suite of fixed ambient sensors, such asincluding: an air speed sensor; a relative humidity sensor; atemperature sensor; and a light level sensor. For example, the suite offixed ambient sensors can be arranged adjacent the fixed overhead cameraover a grow area of the facility. The system can additionally oralternatively include multiple fixed suites of ambient sensors arrangedthroughout the grow area, such as suspended from ceiling or mounted onload-bearing columns within the facility and such as including one suiteof fixed ambient sensors per square meters of grow area.

The fixed optical sensor can regularly record images of the grow areabelow; and sensors in the suite of fixed ambient sensors can regularlycollect ambient data. For example, the fixed optical sensor can recordan image of once per 10-minute interval; the suite of fixed ambientsensors can record air speed, humidity, air temperature, and light levelvalues once per second; and the fixed optical sensor and the suite offixed ambient sensors can return these data to the computer system via awired or wireless connection.

3.4 Mover

The mover defines a vehicle that autonomously: navigates throughout thefacility; selectively arranges itself over (or adjacent) modules;collects sensor data from in and around these modules (e.g., images ofplants in a module, water quality data of water stored in the module,and/or ambient data around the module); delivers modules to the transferstation for transfer of plants into and out of these modules; andreturns these modules to their assigned locations throughout thefacility, such as responsive to commands issued by the computer system.

As described below, the computer system generates commands to transportspecific modules to various locations throughout the facility, such as“module transfer requests” to transport modules between the grow area,transfer station, a cleaning station, a maintenance area, a dosingstation, and/or a quarantine station. The computer system can alsogenerate commands to collect optical, ambient, and/or water quality datafrom specific modules throughout the facility, such as “module scanrequests” to record module-level images, local air temperature andhumidity, and dissolved oxygen and water temperature in water stored inselect target modules. The computer system can distribute these commandsto the mover, and the mover can autonomously execute these commands.

In one implementation, the mover includes a gantry or boom. To engage amodule, the mover can: navigate to and align itself over the module,such as based on optical fiducials applied to the module; extend theboom into contact with the module; trigger a latch on the boom to engagethe module; and then retract the boom to lift the module. Alternatively,modules in the facility can include casters; to engage a module, themover can navigate up to and align itself with the module, trigger alatch to engage the module, and then push or pull the module—on itscasters—to another location within the facility (e.g., to the transferstation) prior to releasing the latch to disengage the module.

For the mover that is configured to autonomously navigate over a module,the mover can also include a downward-facing optical sensor. As themover approaches a module, the mover can: detect an opticalfiducial—located on the module—in the field of view of thedownward-facing optical sensor; and navigate toward the module to locatethis optical fiducial in a target position and/or orientation in thefield of view of the downward-facing optical sensor in order to alignitself to the module prior to triggering the boom or latch to engage themodule. However, the mover can implement any other method or techniqueto engage and manipulate a module.

3.5 Transfer Station and Robotic Manipulator

The system also includes a transfer station arranged within the facilityand defining a location at which plants are autonomously inspected andtransferred from a first module (e.g., a nursery-type module) containinga higher density of plants slots to a second module (e.g., a finishingmodule) containing a lower density of plants slots. The system can alsoinclude a robotic manipulator: arranged at the transfer station;defining a multi-link robotic manipulator that is sufficiently mobile toreach each plant slot in a module temporarily positioned at the transferstation; including an end effector configured to engage plant cupssupporting plants in this module; and/or including an optical sensor(e.g., a multi-spectral camera, or a stereoscopic camera, etc.)configured to record plant-specific images of plants in these modules,as described below.

In particular, the robotic manipulator functions to transfer plantsbetween a first module (e.g., a nursery-type module) exhibiting a firstdensity of plant slots to a second module (e.g., a finishing-typemodule) exhibiting a second density of plant slots less than the firstdensity. By autonomously moving plants from high-density modules tolower-density modules, the robotic system can ensure that plants havesufficient access to light, water-borne nutrients, and space to continuegrowing over time. While sequentially transferring single plants betweenmodules, the robotic manipulator can also collect optical andnumerical-point data from each, singular plant.

For example, the mover can deliver a nursery-type module to the roboticmanipulator at a first time to receive a set of seedlings from a seedingtray; when transferring seedlings into the nursery-type module, therobotic manipulator can record images and weight data for theseseedlings. The mover can then return the nursery-type module to itsassigned location within the facility. Two weeks later, the mover canreturn the nursery-type module to the robotic manipulator; the roboticmanipulator can then collect images and weight data from these plantswhile transferring these plants from the nursery-type module to afinishing-type module. The mover can then return the finishing-typemodule to its assigned location within the facility. Two weeks later,the mover can return the finishing-type module to the roboticmanipulator; the robotic manipulator can then collect images and weightdata from these plants while transferring these plants from thefinishing-type module into boxes for final processing, packaging, andshipment from the facility. The robotic manipulator can thereforecollect high-resolution image and weight data from plants at a lowfrequency (e.g., once per two-week interval); the computer system canthen write these high-resolution, low frequency data to plant recordsassigned to corresponding plants.

In one implementation, the robotic manipulator includes an opticalsensor (e.g., a 2D or 3D color camera or multispectral imager)integrated into or otherwise coupled to the end effector. Upon arrivalof a first module at the transfer station, the robotic manipulator cannavigate to a position that orients the articulable optical sensor overthe first module and then trigger the articulable optical sensor torecord a single, 2D photographic image (or “optical scan”) of all plantsin the first module. Alternatively, upon arrival of the first module,the robotic manipulator can: navigate the articulable optical sensorthrough multiple preset positions, such as one position over each plantslot in the module; and record a 2D photographic image through thearticulable optical sensor at each of these positions. The system canthen extract characteristics plants in the module from these images,such as a size, color, foliage density or area, geometry, indicators ofpest presence, “health,” and/or “visual appeal” of each plant, asdescribed in U.S. patent application Ser. No. 15/852,749, which isincorporated in its entirety by this reference.

4. Module Scheduling and Delivery

During operation, the system schedules (or queues, dispatches) the moverto collect a first module from its location in a grow area of thefacility and to deliver the first module to a transfer station withinthe facility, as shown in FIGS. 1 and 2 . For example, during a moduletransfer cycle, the mover can: navigate to a location within thefacility to which the first module was last delivered; position itselfunder (or over) the first module; actuate an elevator or latch to liftthe first module off of the floor or to otherwise engage the firstmodule; navigate to a first module docking location on a first side ofthe robotic manipulator at the transfer station; and then lower theelevator or release the latch to return the first module to the floor atthe first module docking location, as shown in FIG. 1 .

The system can similarly schedule the mover to deliver a second moduleto the transfer station, such as a second module containing a lowerdensity of plant slots than the first module. The mover can thenimplement methods and techniques similar to those described above toretrieve the second module (from a cleaning station following harvest ofa last batch of plants form the second module) and to deposit the secondmodule at a second docking location at the transfer station, such asadjacent the robotic manipulator—opposite the first module dockinglocation—at the transfer station. For example, the system can: dispatchthe mover to autonomously deliver a second module—defining a secondarray of plant slots at a second density less than the first density andempty of plants—to the transfer station (e.g., to a second moduledocking location on a second side of the robotic manipulator oppositethe first module docking location at the transfer station) for loadingwith viable plants from the first module; dispatch the mover toautonomously deliver a third module—defining a third array of plantslots at the second density—to the transfer station for loading withviable plants from the first module once plant slots in the secondmodule are filled; and dispatch the mover to autonomously deliver afourth module—defining a fourth array of plant slots at the firstdensity—to the transfer station in Block S114 for loading withundersized or otherwise lower-viability plants from the first module.

In one implementation, the system queues the mover to deliver modules tothe transfer station—for transfer of plants from these modules intolater-stage modules characterized by lower plant slot densities or forharvest of plants from these modules—according to a fixed schedule for aplant type or varietal occupying these modules. For example, for alettuce on an eight-week grow cycle, the system can schedule the moverto: deliver a seeding module to the transfer station for transfer ofplants from the seeding module into a nursery-type module two weeksafter the seeding module was seeded; deliver this nursery-type module tothe transfer station for transfer of plants from the nursery-type moduleinto a heading-type module two weeks after the nursery-type module wasloaded with these plants; deliver this heading-type module to thetransfer station for transfer of plants from the heading-type moduleinto a finishing-type module two weeks after the heading-type module wasloaded with these plants; and then deliver this finishing-type module tothe transfer station for harvest of these plants two weeks after thefinishing-type module was loaded with these plants.

Additionally or alternatively, the system can: access scan data (e.g.,photographic images)—depicting modules deployed to grow areas throughoutthe facility—recorded by fixed sensors in the facility; access scandata—depicting these modules—recorded by sensors in the mover as themover navigates autonomously throughout the facility; detect and extractcharacteristics (e.g., leaf area, height, weight, plant quality) ofplants depicted in these photographic images or other scan data; andthen estimate growth stages of these plants based on thesecharacteristics. The system can then dynamically schedule the mover todeliver modules to the transfer station—for transfer of plants fromthese modules into later-stage modules or for harvest of plants fromthese modules—based on growth stages of plants thus derived from thesescan data.

5. Plant Transfer Cycles

Upon receipt of a first module containing plants at a first (estimatedor predicted) growth stage and upon receipt of a second module definingan array of plant slots configured for a next growth stage for theseplants, the robotic manipulator can execute a sequence of plant transfercycles to sequentially transfer plants from the first module to thesecond module.

In one implementation, when transferring plants from the first moduleinto the second module, the robotic manipulator can: locate the opticalsensor over the first module; detect the first module (e.g., an opticalfiducial on the first module) in the field of view of the opticalsensor; navigate the optical sensor over the second module; detect thesecond module (e.g., a similar optical fiducial on the second module) inthe field of view of the optical sensor; calculate a path between afirst plant slot in the first module and a last plant slot in the secondmodule; navigate the end effector toward the first module to engage afirst plant in the first plant slot in the first module; retract thefirst plant from the first plant slot along the calculated path; (recorda weight of the first plant, such as via a load cell interposed betweenthe end effector and an end of the robotic manipulator;) (locate thefirst plant in an optical inspection station near the touch sensor forrecordation of a high-resolution 2D or 3D scan of the first plant;) andnavigate the end effector along the path to insert the first plant intothe last plant slot in the second module. The robotic manipulator canrepeat this process to transfer a second plant in the first module intoa second-to-last plant slot in the second module, to transfer a thirdplant in the first module into a third-to-last plant slot in the secondmodule, and to transfer a fourth plant in the first module into afourth-to-last plant slot in the second module, etc. until the secondmodule is filled with plants.

Thus, by sequentially transferring plants from the first module into thesecond module during a scheduled plant transfer cycle, the roboticmanipulator can sequentially gain access to each plant slot in both thefirst and second modules and thus remove a first sensor pod from anyplant slot in the first module and install a second sensor pod into anyplant slot in the second module.

6. Deployment of Sensor Pods During Scheduled Plant Transfer Cycle

Furthermore, if the system flags a module to receive a sensor pod whenplants are transferred (e.g., from an earlier-stage module) into thismodule, the robotic manipulator can: retrieve a sensor pod from a sensorpod magazine—containing cleaned and calibrated sensor pods—located nearthe transfer station; and load the sensor pod into a target plant slotin this module, such as before, after, or while loading plants into allother plants slots in the module.

In one implementation, when loading a sensor pod into a module, therobotic manipulator locates the sensor pod in a plant slot proximal alateral and longitudinal center of the module, thereby minimizingdistances from sensors in the sensor pod to plants in this module andthus enabling the sensor pod to collect ambient and water quality datathat may represent an average of ambient and water quality conditionsexperienced by plants occupying this module.

Alternatively, if a calibration duration of the sensor pod (i.e., aperiod of time over which sensors in the sensor pod may remain within acalibration range or exhibit less than a threshold drift) is less than aduration of time from placement of the sensor pod into the module and anext scheduled plant transfer cycle of plants out of the module and/orif the sensor pod is scheduled to be removed from this module prior tothis next scheduled plant transfer cycle, the robotic manipulator caninstead insert the sensor pod into a plant slot on a periphery of themodule. For example, the robotic manipulator can insert the sensor podinto a plant slot on one of four corners of the module or into a plantslot along a long edge of the module facing the transfer station suchthat the robotic manipulator can later access and remove the sensor podfrom the module without removing or otherwise disturbing other plants inthis module.

6.1 Dynamic Plant Replacement Selection

In this implementation, to make room for the sensor pod, the roboticmanipulator can remove a plant from a plant slot in the module andeither discard the plant or transfer the plant into a second holdingmodule at the transfer station. For example, the robotic manipulator canrecord an optical image of the module upon arrival at the transferstation. The system can then process this optical image to identify asmallest, lowest-viability, least-healthy, or least-attractive plant ina perimeter plant slot in the module or in a plant slot along an edge ofthe module nearest the robotic manipulator and flag this plant forculling. Accordingly, the robotic manipulator can: navigate the endeffector to this plant slot; engage the plant; remove the plant from themodule; dispense the plant into a waste or compost bin; retrieve asensor pod from a sensor pod cartridge or holding area at the transferstation; and insert this sensor pod into the open plant slot.

6.2 Fixed Plant Slot Location for Sensor Pods

In another implementation, the system can specify default sensor podlocations for all modules, such as a top-right plant slot (e.g., a“first” plant slot) and a bottom-left plant slot (e.g., a “last” plantslot) in all modules. In this example, the system can designate a moduleto receive a sensor pod as a replacement for a plant currently occupyingthe module and trigger the mover to deliver the module to the transferstation. Upon arrival of the module at the transfer station, the roboticmanipulator can: remove a first plant from a nearest of the first orlast plant slot in the module; load the first plant into a holdingmodule currently located at the transfer station; and load a sensor podinto the open plant slot. (In this example, when a second plant lessviable than the first plant is later detected in another moduledelivered to the transfer station, the robotic manipulator can replacethis second plant with the first plant. Alternatively, the system cancontinue to load the holding module with plants selectively removed fromother modules, and the mover can return the holding module to a growarea in the facility once the holding module is sufficiently full ofplants.)

However, the system can implement any other method or technique toreplace a plant with a sensor pod outside of a scheduled plant transfercycle involving the module.

7. Transfer of Sensor Pod During Scheduled Plant Transfer Cycle

In one variation, if the system designates a sensor pod to stay with agroup of plants moving from a first, earlier-stage module to a second,later-stage module during a plant transfer cycle, the roboticmanipulator can implement similar methods and techniques to transferboth this group of plants and this sensor pod from the first module intothe second module.

Alternatively, if upon transfer of a module—containing a sensor pod—tothe transfer station during a scheduled plant transfer cycle the systemdetermines that plants in the module have not met trigger conditions fortransfer to a later-stage module, the system can trigger the roboticmanipulator to: remove the sensor pod from a particular plant slot inthe module; load the sensor pod into a magazine of “used” sensor podsawaiting cleaning and recalibration; retrieve a second sensorpod—previously cleaned and recalibrated—from a magazine of refurbishedsensor pods; and load this second sensor pod into the particular plantslot in the module before the mover returns the module to its assignedlocation in the facility.

8. Sensor Pod Deployment Outside of Plant Transfer Cycles

In another variation, the robotic manipulator can additionally oralternatively load a sensor pod into a plant slot in a module outside ofa scheduled plant transfer cycle for this module. In particular, thesystem can select a module for enhanced monitoring at random or based onplant characteristics extracted from data collected by fixedinfrastructure in the facility and/or from data collected by the moverwhile autonomously navigating throughout the facility. Accordingly, thesystem can dispatch the mover to deliver this module to the transferstation for temporary installation of a sensor pod.

8.1 Module Manipulation Outside of Scheduled Plant Transfer Cycles

In one implementation, the system queues the mover to deliver modulesfrom a grow area to the transfer station for scanning by the roboticmanipulator during periods in which a low frequency of plant transfercycles are scheduled at the transfer station. For example, upon receiptof a module during this period, the robotic manipulator can scan plantsoccupying these modules before the mover returns the module—with plantsgenerally undistributed—back to its assigned location in the grow area.The system can then process these scan data to: derive characteristics(e.g., size, quality, and/or pest pressure) of these plants; revise anestimate of a current growth stage of these plants based on thesecharacteristics; and update a scheduled plant transfer cycle for thismodule based on the current growth stage of these plants.

In particular, plants in modules in different locations throughout thefacility may grow at different rates due to varying amounts of sunlightexposure. Therefore, during periods in which a low frequency of planttransfer cycles are queued or pending at the transfer station, thesystem can: prompt the mover to deliver modules to the transfer stationto collect high-resolution scans of plants in these modules; updateassessments of growth stages of groups of plants occupying individualmodules based on these high-resolution scans; and adjust scheduled planttransfer cycles for these modules accordingly—even if the roboticmanipulator does not move or otherwise interface with these plantsduring these scan cycles.

Furthermore, in this variation and as described herein, the system canprocess scan data of plants in a module in (near) real-time, detecttrigger conditions for collecting higher-resolution environmental andwater quality data from this module, and selectively queue the roboticmanipulator to replace a plant in the module with a sensor pod.

9. Sensor Pod Allocation

The system can designate segments of a population of sensor podsdeployed in the facility to trigger-based, adaptive, random, and backupallocation to modules throughout the facility, as shown in FIG. 4 .

For example, the facility can house nursery-type modules containing 48plant slots each and 4000 finishing-type modules containing twelve plantslots each for a total of 5000 modules and capacity of up to 96,000plants in nursery and finishing stages. In this example, the facilitycan be outfitted with 200 sensor pods, including: 60 sensor podsdesignated for trigger-based allocation; 40 sensor pods designated foradaptive allocation; 60 sensor pods designated for random allocation;and 40 sensor pods designated for backup allocation.

9.1 Trigger-Based Sensor Pod Allocation During Plant Transfer Cycle

During operation, the system can regularly dispatch the mover totransfer nursery-type and finishing type modules from a grow area in thefacility to the transfer station. Upon arrival of a first, nursery-typemodule at the transfer station, the robotic manipulator can collecthigh-resolution data—such as optical scan and weight measurements—ofplants in this first module, such as while transferring these plantsfrom the first module into finishing-stage modules. The system can scanthese plants for positive or negative triggers for enhanced ambient andwater condition tracking, such as presence of: consistent targetcharacteristics (e.g., target size, color, foliage density, and/orshape) for all plants in the module for their current growth stage;inconsistent characteristics (e.g., high variance in size, color,foliage density, shape) of plants in the module; or chemical burns, heatburns, or indicators of pest presence in these plants. If the systemthus detects a positive or negative trigger for further data collectionfrom these plants, the system can flag this set of plants for enhancedambient and water condition tracking. Accordingly: the roboticmanipulator can exchange an individual plant in a second,finishing-stage module with a sensor pod; the mover can return thissecond module to its assigned location in the facility; and the roboticmanipulator can later remove the sensor pod from the second module whenenhanced tracking is no longer needed at the second module, at theconclusion of a preset calibration period for the sensor pod, or whenharvesting plants from the second module.

In one example shown in FIG. 1 , a first nursing-type module can include48 plants slots loaded with 48 plants. Once these plants reach a targetgrowth stage or a target level of maturity (such as determined by thesystem based on optical data collected by fixed overhead sensors in thegrow area or by sensors arranged on the mover), the system can dispatchthe mover to deliver the first module and a set of four finishing-typemodules—each containing twelve empty plants slots—to the transferstation, and the robotic manipulator can then record optical images ofplants in the module upon receipt at the transfer station. The systemcan then derive characteristics of these plants from these opticalimages and selectively flag these plants currently stored in this firstmodule for enhanced monitoring based on their characteristics.

In this example, the system can flag these plants in the first modulefor enhanced monitoring upon transfer into finishing-stage modules: ifvariance of characteristics (e.g., size, color, weight, geometry,symmetry) of plants in the first module exceeds a preset threshold; ifplants in the first module exhibit characteristics within a thresholddifference from predefined “ideal” plant characteristics; ifcharacteristics of plants in the first module fall betweencharacteristics of past plants with known positive outcomes and pastplants with known negative outcomes; if a characteristic of plants inthe first module differs from characteristics of past plants grown inthe facility by more than a threshold difference; or if characteristicsof plants in the first module are sufficiently similar to a combinationof characteristics previously flagged by the system for furtherinvestigation (e.g., to refine and improve a plant model, such asdescribed above). In this example, the system can also modify thesethresholds or trigger values based on a quantity of sensor podsdesignated for trigger-based allocation still available at the transferstation, such as by increasing these thresholds as the number ofavailable sensor pods decreases.

If the system thus confirms that plants in the first module meet one ofthese trigger conditions, the system can flag one of the finishing-typemodules—scheduled to receive plants transferred out of the firstmodule—to receive a sensor pod. For example, the system can identify aparticular plant—in the first module—to cull (i.e., discard, such as asmallest plant or a least visually-attractive plant) to make room for asensor pod in the four finishing-type modules. In this example, thesystem can: derive a viability score for each plant in the module basedon characteristics of these plants extracted from global or module-levelscan data, such as described in U.S. patent application Ser. No.15/852,749; and then flag a particular plant—characterized by a lowestviability score in the set of plants occupying the module—forreplacement with a sensor pod. The robotic manipulator can then:sequentially transfer twelve plants into plant slots in each of thefirst three finishing-type modules; sequentially transfer eleven plantsinto plant slots in the fourth finishing-type module; insert acalibrated sensor pod into a last plant slot in the fourthfinishing-type module; and discard the particular plant flagged forculling. The system can then dispatch the mover to return the fourfinishing-stage modules to the grow area.

In this example, the system can also: segment plants in the first moduleinto four groups based on similarities of characteristics or features ofthese plants, such as size, weight, color, and/or geometry; assign eachgroup of plants to one of the four finishing-type modules; and flag aparticular group in these four groups of plants and the correspondingfinishing-type module for enhanced monitoring via a sensor pod, such asa group containing lowest-viability or smallest plants. For example, thesystem can: extract a characteristic of plants in the first module froman optical scan of the first module; define a first group of plantsexhibiting a first range of the characteristic (e.g., a first size,color, or geometry range); define a second group of plants exhibiting asecond range of the characteristic distinct from the first range of thecharacteristic; and then assign a sensor pod to the first group ofplants in response to the first range of the characteristic deviatingfrom a target characteristic for plants at this growth stage more thanthe second range of the characteristic. The system can similarly definea third group and a fourth group of plants in the first module. Therobotic manipulator can then: discard a lowest-viability plant from thefirst group of plants while loading plants in each distinct group intoits assigned finishing-type module; and load a sensor pod into an emptyplant slot in a first finishing-type module containing the first groupof plants.

However, if the system fails to identify a preset trigger condition inplants in the first module (or in one group of plants in the firstmodule), the system can withhold sensor pods from these finishing-typemodules.

Therefore, in this implementation, the system can selectively load asensor pod into a particular module during a scheduled plant transfercycle of plants from an early-stage module into the particular modulebased on characteristics of these plants extracted from optical imagesor other data collected by the robotic manipulator during this scheduledplant transfer cycle.

9.2 Ad Hoc Trigger-Based Sensor Pod Allocation

In a similar implementation, the system can: access lower-resolutionoptical images of modules—arranged throughout the facility—recorded byfixed infrastructure in the facility and/or by the mover whileautonomously navigating throughout the facility; implement methods andtechniques described above to extract characteristics of plants arrangedin these individual modules; and rank, prioritize, or flag theseindividual modules for candidacy for enhanced monitoring. For example,the system can rank a module for enhanced monitoring via a sensor podbased on: similarity of characteristics of plants in a module detectedin a photographic image—recorded by fixed infrastructure or the mover—topredefined “ideal” plant characteristics; intensity of colors indicatingchemical, heat, or light burns in a region of the photographic imagerepresenting the module; or intensity of features correlated with pestpresence in the region of the photographic image representing themodule; etc. such as relative to other modules in the facility.

The system can then trigger the mover to deliver a highest-ranked modulein this set to the transfer station; and the robotic manipulator canreplace a plant in this module with a sensor pod. The system, mover, androbotic manipulator can repeat this process until available sensor podscurrently designated for trigger-based allocation are deployed.

9.3 Sensor Pod Allocation: Adaptive

The system can implement similar methods and techniques to extractcharacteristics of plants occupying clusters of modules in the facility,such as from optical images recorded by fixed infrastructure, by themover, and/or by the robotic manipulator. The system can then distributesensor pods within a cluster of modules containing plants exhibitingcharacteristics of interest (or predicted to yield a certain outcomebased on these characteristics) in order to access higher-resolutionenvironmental and water quality data for some of these modules, whichmay enable the system to interpolate ambient and water quality exposureof other plants in these clusters with great accuracy.

In this implementation, the system can: isolate a cluster of modulescontaining plants that exhibit deviations from other plants growing inthe facility along one or more dimensions, such as greater probabilityof pest pressure, color differences, more pronounced heat burns, smallerplant sizes, etc.; select a target module in this cluster; and dispatchthe mover to deliver this target module to the transfer station. Forexample, the system can access a set of optical images recorded by a setof fixed sensors arranged over a grow area within the agriculturalfacility and implement computer vision techniques (e.g., edge detection,template matching, deep learning) to detect a boundary of each module inthe set of modules based on features extracted from this set of opticalimages. The system can then: detect a first group of plants within aboundary of a first module in the set detected in these optical images;derive a first magnitude of a particular plant characteristic (e.g.,color, size, geometry, symmetry, leaf area, or sign of biotic or abioticpressure) of the first group of plants in this first module based onfeatures extracted from the set of optical images; and repeat thisprocess for each other module in this set. The system can then segmentthis set of modules into discrete groups of neighboring modules, whereineach group of neighboring modules includes modules that contain groupsof plants exhibiting similar magnitudes of the particular plantcharacteristic. In this example, the system can implement clusteringtechniques (e.g., k-means clustering techniques) to isolate a quantityof contiguous, discrete groups of neighboring modules equal to aquantity of sensor pods designated for adaptive allocation. The systemcan then: select one target module—for each group of neighboringmodules—exhibiting a magnitude of the particular plant characteristicrepresentative of this characteristic within its group; and dispatch themover to (sequentially) deliver each of these target modules to thetransfer station for loading with a sensor pod in the population ofsensor pods designated for adaptive allocation.

In a similar example, the system implements: computer vision techniquesto detect a leaf area (e.g., area of plant foliage) of plants occupyinga set of plants depicted in a set of optical images recorded by fixedand/or mobile infrastructure in the facility; extracts a gradient ofplant characteristics from this leaf area; and implements clusteringtechniques to isolate a quantity of contiguous, discrete subareas ofplant foliage equal to a quantity of sensor pods designated for adaptiveallocation, wherein each subarea of plant foliage exhibits low plantcharacteristic variance(s), such as minimum color, leaf area, andgeometric variance. The system can then:

calculate a centroid of each subarea of plant foliage; project thecentroid of each subarea of plant foliage onto a map of module locationsin the facility; and flag each module that overlaps a centroid of asubarea of plant foliage for allocation of a sensor pod from thisquantity of sensor pods designated for adaptive allocation. Accordingly,the system can then dispatch the mover to (sequentially) deliver each ofthese target modules to the transfer station for loading with a sensorpod.

Upon arrival of a target module at the transfer station, the roboticmanipulator can: scan the target module; identify a particularlowest-viability plant or an “average” plant located along one or moreedges of the target module that are accessible to the roboticmanipulator; discard the particular plant (or move the particular plantinto a holding module also located at the transfer station); and replacethe particular plant with a sensor pod. The system can then dispatch themover to return the target module back to its assigned location withinthe cluster of modules.

While the sensor pod is deployed in this target module, the system canthen collect enhanced ambient and/or water data from this target modulevia the sensor pod and predict (e.g., interpolate, extrapolate) similarconditions at other modules in this cluster based on physical proximityto the target module. The robotic manipulator can later remove thissensor pod from the target module, such as during a next scheduled planttransfer cycle or after a preset duration (e.g., after a duration oftime in which sensors in the sensor pod are predicted to remainsufficiently calibrated).

In a similar example, the system can identify a region of interestwithin the grow area that exhibits deviating conditions, such as greatertemperature variance, greater peak light intensity, or reduced air speedrelative to other regions in the facility based on data collected byfixed infrastructure in the facility and/or by the mover. The system canthen elect a target module within this region of interest of the growarea and trigger the mover and robotic manipulator to cooperate to loada sensor pod into a plant slot in this target module, such as for aduration of several hours, days, or until a next scheduled planttransfer cycle for this target module.

In yet another example, the system can maintain sensor pods designatedfor adaptive allocation in a fixed distribution (e.g., a grid array)throughout the grow area even as modules of various types move into, outof, and through the grow area. In particular, as modules are loaded withplants, unloaded with plants, cleaned, and/or repaired, etc. andassigned different grow locations within the grow area over time, thesystem can trigger the robotic manipulator to load adaptive-designatedsensor pods into select modules assigned grow locations that intersect apredefined distribution map for these sensor pods. The system can theninterpolate ambient and water quality conditions across the entire growarea based on sparse data collected by sensor pods in these predefinedlocations.

In another example, the system: selects a first module and a secondmodule containing plants at similar stages but exhibiting substantiallydissimilar characteristics; prompts the robotic manipulator to load thefirst and second modules with adaptive-designated sensor pods; collectsambient and/or water quality data from these sensor pods over a periodof time; and then derives a correlation between ambient and/or waterquality conditions and plant characteristics based on data received fromthese sensor pods and characteristic differences of plants in the firstand second modules. The system can also: select a third module and afourth module arranged in different locations within the facility andcontaining plants at similar stages and exhibiting similarcharacteristics; prompt the robotic manipulator to load the third andfourth modules with adaptive-designated sensor pods; collect ambientand/or water quality data from these sensor pods over a period of time;and then isolate ambient and/or water quality variables that exhibitweak correlation to characteristics of these plants based on datareceived from these sensor pods.

9.4 Sensor Pod Allocation: Random

In yet another implementation, the system can: (pseudo-)randomly selectmodules arranged throughout the facility; flag these modules forenhanced monitoring; and trigger the mover and robotic manipulator tocooperate to load sensor pods into these target modules. For example, afacility housing nursery-type modules and 4000 finishing-type modulescan be outfitted with 50 sensor pods dedicated to “random” distributionthroughout the facility. In this example, the robotic manipulator canautomatically calibrate sensors in these sensor pods, and these sensorpods can remain within a calibration range for a known or presetcalibration duration (e.g., two days). During operation, when a sensorpod in this set has been deployed in a first, randomly-selected modulefor more than the known or preset calibration duration, the system can:trigger the mover to deliver the first module to the transfer station;randomly select a second module in the facility; and trigger the moverto deliver the second module to the transfer station. The roboticmanipulator can then autonomously: remove the sensor pod from the firstmodule; place the sensor pod in one or more calibration fluids locatedat the transfer station to calibrate water quality sensors in the sensorpod; place the sensor pod in an environmental chamber of knowntemperature, light level, and/or wind speed, etc. to calibrate ambientsensors in the sensor pod; and the return the sensor pod to a plant slotin the second module before the mover returns the second module to growarea.

By thus (pseudo-)randomly locating sensor pods throughout the facility,the system can collect enhanced ambient and water-related data formodules throughout the facility even before ambient conditions and/orwater conditions proximal these modules manifest as changes in qualitiesof plants contained in these modules, thereby enabling the system toachieve greater probability of: 1) recording enhanced ambient and waterquality data predictive of desirable and undesirable plant outcomes evenbefore links between certain ambient and water quality conditions andplant outcomes are known; and 2) detecting and responding to ambient andwater quality conditions that affect plant outcomes prior to suchconditions producing visual, physical changes in these plants.

In particular, the system can deploy sensor pods randomly to modulesthroughout the facility in order to hedge against unknown effects ofambient and/or water quality conditions on plant characteristics thatare not captured through adaptive deployment of sensor pods in thefacility.

9.5 Sensor Pod Allocation: Emergency Backup

In an instance in which the system has deployed all sensor podsdesignated for trigger-based, adaptive, or random allocation, the systemcan selectively trigger the robotic manipulator to loadbackup-designated sensor pods into high-priority modules.

For example, the system can allocate backup-designated sensor pods fortrigger-based deployment throughout the facility if the system detects agreater frequency of modules that contain plants exhibiting abnormallypositive characteristics, abnormally negative characteristics, oranomalous characteristics—such as from optical images recorded by fixedinfrastructure, the mover, and/or the robotic manipulator. In anotherexample, the system can allocate backup-designated sensor pods forrandom deployment if data collected by fixed infrastructure in thefacility and/or by the sensors in the mover indicate increased variancein ambient and/or water quality conditions in modules across thefacility

10. Data Aggregation and Responsive Actions

The system can then selectively trigger, schedule, or execute responsiveactions within the facility based on data collected by sensor podsdeployed to modules according to adaptive, random, and trigger-basedallocation schema.

10.1 Module Cluster Response

In one implementation shown in FIG. 6 , the system tracks environmentalexposure of plants in clusters (or “neighborhoods”) of modules based onsensor data (E.g., environmental and/or water quality data) receivedfrom an individual sensor pod deployed to this cluster over time. Inresponse to detecting a deviation of environmental and/or water qualityconditions at this sensor pod and target environmental exposure for thegrowth stage of plants occupying these modules, the computer system canschedule or autonomously execute operational changes in the facility toreduce this deviation.

For example, the system can implement closed-loop controls to adjustartificial lighting over the cluster of modules in order to maintain alight level detected by a light level sensor in the sensor pod within anarrow target light level range, such as by automatically increasing apower setting of select artificial lighting elements over the cluster ofmodules if the light level detected by the sensor pod is less than atarget light level and vice versa. The system can similarly controlHVAC, fans, and dehumidifiers near this cluster of modules to maintaintarget temperature, airflow, and humidity conditions around this clusterof modules.

In another example shown in FIG. 6 , the system can estimate mildewpressures in the cluster of modules based on environmental data recordedby sensors integrated into the sensor pod, such as by detecting visualmildew indicators (e.g., on a tray or on plant leaves) in photographicimages captured by a camera integrated into the sensor pod or as afunction of timeseries temperature and humidity data collected by thesensor pod. In this example, in response to detecting a mildew pressurethat exceeds a threshold mildew pressure based on data collected by asensor pod deployed in a particular module, the system can dispatch themover to deliver the particular module to a mildew suppression stationwithin the facility for selective application of a mildewcide ontoplants in the particular module. The system can also identify a clusterof modules neighboring the particular target module and dispatch themover to (sequentially) deliver each module, in this cluster of modules,to the mildew suppression station for selective application of themildewcide. The system can also adjust environmental controls to reducehumidity near this cluster of modules. Following application ofmildewcide and return of these modules to their assigned locations inthe facility, the system can verify success of this responsive actionbased on reduction in mildew indicators in data received from the sensorpod occupying the particular module in this cluster.

10.2 Gradient

In a similar implementation shown in FIG. 6 , the system can: accesstimestamped sensor data recorded by all deployed sensor pods, includingsensor pods deployed according to adaptive, trigger-based, and randomallocation schema; access locations of modules occupied by these sensorpods in the facility; and tag these timestamped sensor data withlocations (e.g., (x,y) coordinates) of modules occupied by sensor podsthat generated these timestamped sensor data. The system then calculatesa gradient of a particular environmental condition across theagricultural facility—including at modules not occupied by sensorpods—based on timestamped sensor data recorded by this population ofsensor pods and locations of these sensor pods when these sensor datawere recorded. For example, the system can interpolate and extrapolatethis particular environmental condition across the entire facility togenerate an environmental condition gradient based on last values ofthis environmental condition last received from the population of sensorpods and known locations of the sensor pods throughout the facility.

The system can then implement closed-loop controls, as described above,to schedule environmental control changes in the agricultural facility,such as in order to reduce this environmental condition gradient and todrive this environmental condition to a narrow target range across thefacility. The system can implement similar methods and techniques toadjust environmental controls in subareas of the facility in order todrive the environmental condition gradient in each subarea of thefacility to a particular value or range.

10.3 Modeling

In another implementation, the system can selectively deploy a firstsensor pod to a particular module responsive to detected deviations ofplants contained in this module from expected characteristics (e.g.,size, color, geometry, symmetry) for plants in this growth stage and/orresponsive to detected deviations of plants contained in this modulefrom characteristics of plants in other modules nearby. The system cansimilarly deploy a second sensor pod to a second module—located adjacentthe particular module—containing plants not exhibiting this deviationfrom these expected characteristics. The computer system can then:monitor environmental and water-quality conditions in the particularmodule and the second module based on sensor data recorded by the firstand second sensor pods; and monitor characteristics of plants in thesemodules based on global and/or module-level scan data recorded by fixedand/or mobile infrastructure in the facility. The system can alsoimplement regression, machine learning, deep learning, and/or othertechniques to derive correlations between the characteristic deviationof plants and the set of environmental conditions, such as based ondifferences between environment conditions detected by the first andsecond sensor pods and differences in characteristics presenting inplants in the particular and second modules.

Additionally or alternatively, in response to a magnitude of theenvironmental condition gradient deviating from a target environmentalcondition range at a particular location in the agricultural facility,the system can: query a map of module locations throughout the facilityto identify a particular module (or cluster of modules) proximal theparticular location of the environmental condition deviation; schedulethe particular module (or the cluster of modules) for manual inspectionby a human operator; and/or schedule the particular module (or thecluster of modules) for delivery to the transfer station—outside of ascheduled plant transfer cycle—for capture of a (high-resolution)module-level scan of the module or (higher-resolution) scans ofindividual plants occupying the module.

10.4 Water Quality Conditions

The system can implement similar methods and techniques to track,respond to, and/or develop models or correlations for water qualityconditions in modules throughout the facility, such as by leveraging anassumption that water is refreshed at similar times and to similarconditions in neighboring (i.e., physically-proximal) modules throughoutthe facility.

11. Sensor Pod Retrieval

Later, the robotic manipulator can remove a sensor pod from a module. Inone implementation, when a module is delivered to the transfer stationfor a next scheduled plant transfer cycle, the robotic manipulator cansequentially remove plants from the module in order of first plant slotto last plant slot. Upon reaching the sensor pod, the roboticmanipulator can remove the sensor pod from the module and place thesensor pod into a holding or cleaning cell and resume transfer ofremaining plants from the module. Alternatively, upon reaching thesensor pod, the robotic manipulator can pause removal of plants from themodule and immediately enter a cleaning and calibration routine to cleanand then calibrate the sensor pod, as described below.

Alternatively, when a predefined enhanced monitoring period for a moduleexpires or when a calibration duration of a sensor pod expires, thesystem can dispatch the mover to deliver the module to the transferstation. The robotic manipulator can then: detect the module in thefield of view of the optical sensor on the robotic manipulator; detectthe sensor pod in the field of view of the optical sensor and/or accessan address of a particular plant slot occupied by the sensor pod in themodule; autonomously navigate the end effector to the particular plantslot; and then remove the sensor pod from the module withoutdistributing other plants occupying the module.

12. Sensor Pod Calibration

Upon removing a sensor pod from a module, the robotic manipulator canexecute a cleaning routine to clean and disinfect the sensor pod. Forexample, the robotic manipulator can place the sensor pod into a steamchamber or bleach or hydrogen peroxide bath for sanitization.

The robotic manipulator can then execute a calibration routine torecalibrate sensors in the sensor pod. For example, the roboticmanipulator can: sequentially transfer the lower mast of the sensorpod—containing various water quality sensors—between a series of vesselscontaining calibration fluids (e.g., a fluid at a known temperature, afluid at a known pH, and a fluid with a known dissolved oxygen level)and rinsing fluids (e.g., distilled water); and recalibratecorresponding water quality sensors accordingly. In this example, therobotic manipulator can then: place the upper mast of the sensorpod—containing various ambient sensors—into an environmental chamberheld at a known temperature, light level, and/or wind speed, etc.; andcalibrate ambient sensors in the sensor pod accordingly.

Once the sensor pod is cleaned and recalibrated, the robotic manipulatorcan place the sensor pod in a storage container while awaitingredeployment into another module.

(Alternatively, upon removing a sensor pod from a module, the roboticmanipulator can execute a cleaning routine to clean the sensor pod andthen place the sensor pod in a storage container; once a command to loadthe sensor pod into another module is received, the robotic manipulatorcan execute a calibration routine to calibrate the sensor pod just priorto loading the sensor pod into this module.)

The robotic manipulator can additionally or alternatively executeintermediate calibration checks—such as by inserting the sensor podsensor suite into a solution of known quality to confirm that sensorvalues read by the sensor pod fall within a tolerable error afterremoving the sensor pod from a module or before inserting the sensor podinto a module.

Therefore, in response to conclusion of a deployment period for a sensorpod deployed in a module in the facility, the system can: schedule therobotic manipulator to retrieve the sensor pod from the target module;schedule the sensor pod for cleaning; schedule the first sensor pod forrecalibration of a sensor (e.g., a water-quality sensor) integrated intothe sensor pod; and then later assign the sensor pod another moduledesignated to enhanced monitoring, as described above.

In one variation, the system includes automated dosing equipmentdeployed in the facility, configured to dose individual modules withnutrients, and including a suite of sensors configured to detectqualities of water in individual modules. When the automated dosingequipment doses a module—loaded with a sensor pod—with nutrients, theautomated dosing equipment can monitor sensor values read from itsintegrated water quality sensors, and the system can calibrate sensorsin the sensor pod to sensor values read by the automated dosingequipment. Alternatively, the system can: verify calibration of theautomated dosing equipment and the sensor pod based on alignment ofconcurrent sensor values read from these equipment; and selectivelytrigger recalibration of both the automated dosing equipment and thesensor pod responsive to misalignment of these concurrent sensor data.

13. Sensor Pod Redeployment

The system can then redeploy the recalibrated sensor pod to a module inthe facility. For example, as modules are delivered to a transferstation in the facility, the system can: scan a module; determinewhether plants in this module exhibit certain trigger conditions forenhanced monitoring with sensor pods; calculate a rank or priority ofthis module based on characteristics of plants in this module and lastknown characteristics of plants in other modules throughout thefacility; and trigger the transfer station to insert a sensor pod intothis module if the rank of this module exceeds a threshold (e.g., themodule falls within a top-50 modules ranked by severity of triggerconditions exhibited by plants in these modules). In this example, thesystem can also identify a second module associated with a rank that nolonger exceeds the threshold; trigger the mover to deliver this moduleto the transfer station; and trigger the robotic manipulator to remove asensor pod from this module, clean and calibrate the sensor pod, andreturn the sensor pod to a holding tray, thereby ensuring that a minimumnumber of sensor pods designed for trigger-based deployment remainon-hand for loading into modules containing plants exhibiting suchtrigger conditions.

The system can similarly execute processes to identify next locations inthe grow area that are good (or better) candidates for enhancedmonitoring and trigger the mover and robotic manipulator to cooperate toredistribute sensor pods designated for adaptive deployment, such as byredeploying all sensor pods designated for adaptive deployment on afour-day interval. The system can similarly generate a new randomdistribution of sensor pods throughout the facility and trigger themover and robotic manipulator to cooperate to redistribute sensor podsdesignated for random deployment, such as by redeploying all sensor podsdesignated for random deployment on a two-day interval.

However, the system can redeploy sensor pods throughout the facility onany other regular schedule or responsive to any other irregular events.

14. Sensor Pod Deployment and Retrieval by Mover

In one variation, the mover implements methods and techniques similar tothose described above to load and unload sensor pods from modules whileautonomously navigating throughout the facility.

The systems and methods described herein can be embodied and/orimplemented at least in part as a machine configured to receive acomputer-readable medium storing computer-readable instructions. Theinstructions can be executed by computer-executable componentsintegrated with the application, applet, host, server, network, website,communication service, communication interface,hardware/firmware/software elements of a user computer or mobile device,wristband, smartphone, or any suitable combination thereof. Othersystems and methods of the embodiment can be embodied and/or implementedat least in part as a machine configured to receive a computer-readablemedium storing computer-readable instructions. The instructions can beexecuted by computer-executable components integrated bycomputer-executable components integrated with apparatuses and networksof the type described above. The computer-readable medium can be storedon any suitable computer readable media such as RAMs, ROMs, flashmemory, EEPROMs, optical devices (CD or DVD), hard drives, floppy drivesor any suitable device. The computer-executable component can be aprocessor but any suitable dedicated hardware device can (alternativelyor additionally) execute the instructions.

As a person skilled in the art will recognize from the previous detaileddescription and from the figures and claims, modifications and changescan be made to the embodiments of the invention without departing fromthe scope of this invention as defined in the following claims.

What is claimed is:
 1. A sensor device comprising: a base configured tobe received within a receptacle of an agricultural module that retains aplurality of plants; an upper mast extending from the base to a topdistal end that includes one or more ambient sensors; and a lower mastextending from the base to a bottom distal end that includes one or moreaqueous sensors.
 2. The sensor device of claim 1 wherein the one or moreambient sensors include a light level sensor.
 3. The sensor device ofclaim 1 wherein the one or more aqueous sensors include at least one ofa water temperature, a water level, a dissolved oxygen, a pH or anutrient level sensor.
 4. The sensor device of claim 1 wherein the uppermast has an adjustable length to change a distance between the one ormore ambient sensors and the base.
 5. The sensor device of claim 1wherein the lower mast has an adjustable length to change a distancebetween the one or more aqueous sensors and the base.
 6. The sensordevice of claim 1 further comprising a rechargeable battery and awireless communications module arranged to receive power from therechargeable battery.
 7. The sensor device of claim 6 further comprisinga solar cell arranged to recharge the rechargeable battery.
 8. Thesensor device of claim 6 further comprising a processor arranged toreceive data from the one or more ambient sensors and transmit the datato a remote computing device via the wireless communications module. 9.The sensor device of claim 1 further comprising an insect trap arrangedto retain one or more insects.
 10. The sensor device of claim 9 furthercomprising an insect sensor arranged to detect the one or more retainedinsects.
 11. An apparatus comprising: a base arranged to be receivedwithin an agricultural module, wherein the agricultural module isarranged to support a plurality of plants above an aqueous solution; anupper mast extending from the base to a top distal end that includes oneor more ambient sensors; and a lower mast extending from the base to abottom distal end and including one or more aqueous sensors.
 12. Theapparatus of claim 11 wherein the one or more ambient sensors include alight level sensor.
 13. The apparatus of claim 11 wherein the one ormore aqueous sensors include at least one of a water temperature, awater level, a dissolved oxygen, a pH or a nutrient level sensor. 14.The apparatus of claim 11 wherein the upper mast has an adjustablelength to change a distance between the one or more ambient sensors andthe base.
 15. The apparatus of claim 11 wherein the lower mast has anadjustable length to change a distance between the one or more aqueoussensors and the base.
 16. The apparatus of claim 11 further comprising arechargeable battery and a wireless communications module arranged toreceive power from the rechargeable battery.
 17. The apparatus of claim16 further comprising a solar cell arranged to recharge the rechargeablebattery.
 18. The apparatus of claim 16 further comprising a processorarranged to receive data from the one or more ambient sensors andtransmit the data to a remote computing device via the wirelesscommunications module.
 19. The apparatus of claim 11 further comprisingan insect trap arranged to retain one or more insects.
 20. The apparatusof claim 19 further comprising an insect sensor arranged to detect theone or more retained insects.